Accession Number : ADA191348

Title :   Adsorption, Mobility and Organization of Organic Molecules at Clay Surfaces Probed by Photophysics and Photochemistry.

Descriptive Note : Interim rept. no. 3.

Corporate Author : KATHOLIEKE UNIV LEUVEN (BELGIUM)

PDF Url : ADA191348

Report Date : 12 Oct 1987

Pagination or Media Count : 13

Abstract : The purpose is to study the polymerization of the detergent (methacryloyloxyethylmethyldiodecylammonium chloride) on a clay surface, and to study the properties of clay particles coated with the obtained polymer. Such ionic polymers are used in a variety of industrial products as thickners, dispersants, flocculants, ion exchange resins, etc... Their suitability for these applications can be referred to the great hydrophilicity and especially to the highly polar character which enable these substances to adsorb other polar compounds, such as dye-stuffs, charged colloidal particles and ions. Before proceeding with this polymerization however, the properties of the monomer adsorption have been studied first. As fluorescent probe, 3-(1-pyrenyl)propyltrimethylammonium bromide (P3N) has been used (1). Three different clays are used in our study: Barasym, a synthetic montmorrillonite, Hectorite and Laponite, a synthetic Hectorite.

Descriptors :   *ADSORPTION, *CLAY, *DETERGENTS, *POLYMERIZATION, *CLUSTERING, CHARGED PARTICLES, CHLORIDES, COLLOIDS, DISPERSANTS, FLOCCULANTS, ION EXCHANGE RESINS, IONS, MOLECULES, ORGANIC COMPOUNDS, PARTICLES, PHOTOCHEMICAL REACTIONS, SURFACES, SURFACE REACTIONS, AMMONIUM COMPOUNDS, ABSORPTION SPECTRA, EMISSION SPECTRA, FLUORESCENCE

Subject Categories : Physical Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE